I-MR-R Chart in Excel using QI Macros

The Individual Moving Range, Range Chart is a combination of XbarR and XmR Chart. It gives both "within" group and "between" group variation. Th I-MR-R chart:

  • Calculates the average of subgroups, just like an XbarR
  • Creates the Range chart (within group variation) just like the XbarR
  • Creates a Moving Range Chart (between group variation) like an XmR using the average of the subgroups
  • Creates the Individuals Chart like an XmR using the average of the subgroups

individuals moving range range chart range chart of subgroups

Analyze Variation with a I-MR-R Control Chart

How to Create an I-MR-R Chart Using QI Macros Add-in for Excel:

  1. Select two or more columns of data.
  2. Click on the QI Macros tab installed on Excel's menu and, select Control Charts then "I-MR-R chart".
  3. QI Macros will do the math and draw the charts for you and turn unstable points or conditions red.
  4. Analyze and interpret the results:
    • Evaluate the range charts first. If they are "out of control," so is the process. If the range charts look okay, then evaluate the X chart.
    • Investigate unstable points or trends

Why Choose QI Macros Over Other Control Chart Software?

affordable

Affordable

  • Only $249 USD - less with quantity discounts
  • No annual subscription fees
  • Free technical support

easy to use

Easy to Use

  • Works right in Excel
  • Create a chart in seconds
  • Easy to customize & share charts

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Proven and Trusted

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